气候变化领域集成服务门户(CCPortal): Arctic Amplification: A Rapid Response to Radiative Forcing

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DOI	10.1029/2020GL089933
	Arctic Amplification: A Rapid Response to Radiative Forcing
	Previdi M.; Janoski T.P.; Chiodo G.; Smith K.L.; Polvani L.M.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:17
英文摘要	Arctic amplification (AA) of surface warming is a prominent feature of anthropogenic climate change with important implications for human and natural systems. Despite its importance, the underlying causes of AA are not fully understood. Here, analyzing coupled climate model simulations, we show that AA develops rapidly (within the first few months) following an instantaneous quadrupling of atmospheric CO2. This rapid AA response—which occurs before any significant loss of Arctic sea ice—is produced by a positive lapse rate feedback over the Arctic. Sea ice loss is therefore not needed to produce polar-amplified warming, although it contributes significantly to this warming after the first few months. Our results provide new and compelling evidence that AA owes its existence, fundamentally, to fast atmospheric processes. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Atmospheric radiation; Climate change; Sea ice; Anthropogenic climate changes; Atmospheric process; Coupled climate model; Natural systems; Prominent features; Radiative forcings; Surface warming; Underlying cause; Climate models; anthropogenic effect; carbon dioxide; climate change; climate modeling; numerical model; radiative forcing; sea ice; simulation; warming; Arctic
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169819
作者单位	Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, United States; Department of Earth and Environmental Sciences, Columbia University, New York, NY, United States; Institute for Atmospheric and Climate Science, Swiss Federal Institute of Technology Zürich, Zürich, Switzerland; Department of Applied Physics and Applied Mathematics, Columbia University, New York, NY, United States; Department of Physical and Environmental Sciences, University of Toronto, Scarborough, Toronto, ON, Canada
推荐引用方式 GB/T 7714	Previdi M.,Janoski T.P.,Chiodo G.,et al. Arctic Amplification: A Rapid Response to Radiative Forcing[J],2020,47(17).
APA	Previdi M.,Janoski T.P.,Chiodo G.,Smith K.L.,&Polvani L.M..(2020).Arctic Amplification: A Rapid Response to Radiative Forcing.Geophysical Research Letters,47(17).
MLA	Previdi M.,et al."Arctic Amplification: A Rapid Response to Radiative Forcing".Geophysical Research Letters 47.17(2020).